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Finding the Fourth Proportional to 91,332.36, 136,736.10 and 67,479.48

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Solution

The fourth proportional to 91,332.36, 136,736.10 and 67,479.48 is: 101,025.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,332.36 : 136,736.10 = 67,479.48 : x
  2. Step 2: Convert to fraction form
    91,332.36/136,736.10 = 67,479.48/x
  3. Step 3: Cross multiply
    91,332.36x = 136,736.10 × 67,479.48
  4. Step 4: Simplify right side
    91,332.36x = 9,226,880,925.23
  5. Step 5: Solve for x
    x = 9,226,880,925.23/91,332.36
  6. Step 6: Final answer
    x = 101,025.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.